[QUOTE=IamIan;471209]How can you possibly know you are in the high efficiency BSFC island if you don't have the BSFC of your ICE to know where that island is ???
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I don't have a BSFC graph for the 500, but when I say my engine is either at BSFC or off, I refer to my daily driver Renault.
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Yup.
That's the same kind of HEV advantage for better potential P&G I mentioned previously.
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Actually as I was driving to work today, I realised I can still vary engine load 'artificially' by choosing when to run the A/C. Many new cars have inteligent algorithms controlling the alternator and A/C that work this way automatically.
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That will depend on what the Low RPM torque output is of that other ICE you want to transplant ... not the peak best case for that ICE , but the low RPM case ... the IMA HEV system in the Insight provides a large amount of low RPM torque ... around doubling the torque from the ICE at some points.
Do you have a RPM vs torque graph for the ICE in order to compare?
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The Fiat does 0-62 in 11 seconds, the stock 1st Gen did it in 11.5, the Fiat is 100kg heavier stock and would be 150kg heavier than the proposed finished car. Hard to see it not being faster as the turbo produces 80% of peak torque from 1500rpm.